forthrightly vs forthright

forthrightly is not an adjective while forthright is an adjective.

Word	Noun	Adjective	Verb	Adverb
forthrightly	No	No	No	Yes
forthright	No	Yes	No	Yes

As adverbs, forthrightly and forthright are synonyms defined as:

forthrightly and forthright: directly and without evasion; not roundabout

Other synonyms of forthrightly include squarely.

forthrightly (adjective)	forthright (adjective)
	characterized by directness in manner or speech; without subtlety or evasion

forthrightly (adverb)	forthright (adverb)
directly and without evasion; not roundabout	directly and without evasion; not roundabout